The confusion continues.
I decided to drop down 2 jet sizes on the primary side from #83s to #81s. The A/F numbers improved slightly but....The car slowed down and actually knocked a little on one run. The numbers at WOT were in the 11.8 to 13.5 range. At cruise it bounced around between 12.0 to 14.6. It really sucks that the numbers have such a wide sweep. Is that normal for it to bounce around so much?
The jet change resulted in less power and one incident of of detonation despite the guage reading richer than the target. This leads me to distrust the guage or doubt the integrity of the carburetor. If I lost power and knocked, I'd think that I leaned it out too much even though the guage says different. I might try my Holley 750 from my 67 Dart to see what numbers I get from that. I wonder if this carburetor is beyond my or anyones ability to tune. These Demon carburetors have a mixed reputation.